I recently had my roof replaced by Derek Chen and his team at GCP Roofing Inc, and I could not be happier with the results. From start to finish, Derek was professional, clear in communication, and committed to delivering excellent workmanship. The crew arrived on time, worked efficiently, and took care of every detail, from removing all old shingles and nails, inspecting the plywood, installing ice and water shield with full underlayment, to adding new vents and replacing the chimney flashing. The job site was kept clean throughout, and they left the property spotless once the project was completed. The quality of work is outstanding, and Derek stood by his word on every commitment. His team’s dedication and attention to detail gave me complete confidence in the project. On top of that, the 15-year labour warranty provides peace of mind for the long run. I highly recommend Derek and GCP Roofing Inc to anyone looking for reliable, professional, and honest roofing services. Excellen
Public evidence profile
Gcp Roofing Inc
- Rated 4.8 from 5 reviews
- 3 reviews in the last 12 months
How this score is worked out
How this score is made up
See the independent checks
- Licences and credentials0 of 7.1
- Ways to reach them0 of 4.8
- Photos of their work0 of 11.9
- Industry recognition0 of 4.8
Missing evidence lowers the score because we can't check it. It doesn't mean it doesn't exist. Claiming a profile never changes the score. Evidence context, not a guarantee of workmanship.
What customers say
These reviews are published independently on the named public source below, not testimonials this business chose to show. We bring them together and link each one back to where it appeared, so you can open the source and read it yourself.
- HomeStars5 reviews · 4.8 avg
Detailed reviews
Derek and his crew did a great job. Roof completed in one day. They were organized and efficient. Cleaned up all debris afterwards. Prices right!
I contacted GCR through HomeStars. Derek responded very quickly and provided an initial estimate. He was also very flexible and came over for a detailed estimate on time. He was thorough with his work and even suggested us to use Owen’s cornering which is high quality materials and avoid others. His team arrived on time and completed the job very efficiently all in one day. We lived in a semi detached with our neighbour and so we completed both houses together. His team’s workmanships was quality work and took photos before and after to show us. Their team replaced the plumbing vent flashing as well as replaced our vents with metal for an extra fee. They also did a great job cleaning up. His prices were very reasonable as well. He also provided detail quotes and offered warranty for his job. It’s been 3 months and so far there hasn’t been any issues. I found Derek and his team to be very professional throughout. Overall I would recommend Derek and his team again! Thank you Derek !
very quick acted my requirement, and quoted in a very nice price; finished my project within 2 weeks. after watching GCP finish my roof replacing, My neighbor want GCP work on his roof as well.
Rated 4.8, above the local average for roofers in Markham
Across 33 roofers in Markham, the typical rating is 4.5 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Where this information comes from
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Is Gcp Roofing Inc a legitimate business?
Gcp Roofing Inc has 5 independent public reviews, rated 4.8 out of 5. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about Gcp Roofing Inc?
Gcp Roofing Inc has 5 public reviews, averaging 4.8 out of 5. You can read the individual reviews and where each came from in the reviews section above.
How do I know Gcp Roofing Inc's reviews are genuine?
Gcp Roofing Inc's 5 public reviews come from a named public review source, and MyTrustedTraders links every one back to where it was published, so you can open the source and read them yourself rather than trusting a single curated page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.
Has Gcp Roofing Inc had recent public reviews?
Gcp Roofing Inc has 3 public reviews dated within the last 12 months. That shows their review history includes recent feedback; it does not prove current availability, so confirm capacity before hiring.